Texas Instruments recommends a 4-layer PCB with a solid ground plane, and to keep analog and digital traces separate. Use a star topology for the analog inputs and keep the analog and digital power supplies separate. Refer to the TI application note 'PCB Layout Guidelines for the ADS7950' for more details.
To optimize the ADS7950QDBTRQ1 for low-power applications, use the lowest possible clock frequency, disable the internal reference, and use the power-down mode when not converting. Additionally, consider using a lower supply voltage and reducing the analog input range to minimize power consumption.
The ADS7950QDBTRQ1 has an internal calibration circuit that can be used to calibrate the device. Apply a known input voltage to the analog input, and then use the CAL pin to initiate the calibration process. The device will adjust its internal offset and gain to ensure accurate conversions.
The ADS7950QDBTRQ1 outputs 16-bit data in a 2's complement format. Ensure that the digital output is properly synchronized with the clock signal, and use a FIFO or a buffer to handle the output data. Also, consider using a CRC or checksum to ensure data integrity.
The ADS7950QDBTRQ1 has a maximum junction temperature of 150°C. Ensure good thermal conductivity between the device and the PCB, and use thermal vias to dissipate heat. Also, consider using a heat sink or a thermal interface material to improve heat dissipation.
ADS7950QDBTRQ1 datasheet
by Texas Instruments
Findchips
